WATSNB-40A/3PA型控制器：置于转换开关内部，监测两路电源电压，控制电源转换动作。CB级：是指转换开关主体如符合GB14048.2、GB14048.9，这些产品本身具有短路、过载保护功能，因此双电源也具有这些功能；而主体开关符合GB14048.3，本身产品不具有类似保护功能，属于PC级；主体开关符合GB14048.4的则属于CC级。R：自投自负（意思是当常用电源出现异常后，双电源会转换至备用电源，而当常用电源***后，则转换至常用电源，反之则属于自投不自复）。施耐德系列双电源自动转换开关型号：WATSGA-32/3PWATSGB-32/3PWATSNA-32A/3PWATSNB-32A/3PWATSGA-63/3PWATSGB-63/3PWATSNA-40A/3PWATSNB-40A/3PWATSGA-100/3PWATSGB-100/3PWATSNA-63A/3PWATSNB-63A/3PWATSGA-125/3PWATSGB-125/3PWATSNA-80A/3PWATSNB-80A/3PWATSGA-160/3PWATSGB-160/3PWATSNA-100A/3PWATSNB-100A/3PWATSGA-200/3PWATSGB-200/3PWATSNA-160A/3PWATSNB-160A/3PWATSGA-250/3PWATSGB-250/3PWATSNA-250A/3PWATSNB-250A/3PWATSGA-320/3PWATSGB-320/3PWATSNA-32A/4PWATSNB-400A/3PWATSGA-400/3PWATSGB-400/3PWATSNA-40A/4PWATSNB-630A/3PWATSGA-500/3PWATSGB-500/3PWATSNA-63A/4PWATSNB-1000A/3PWATSGA-630/3PWATSGB-630/3PWATSNA-80A/4PWATSNB-1250A/3PWATSGA-800/3PWATSGB-800/3PWATSNA-100A/4PWATSNB-1600A/3PWATSGA-32/4PWATSGB-32/4PWATSNA-160A/4PWATSNB-32A/4PWATSGA-63/4PWATSGB-63/4PWATSNA-250A/4PWATSNB-40A/4PWATSGA-100/4PWATSGB-100/4PWATSNB-63A/4PWATSGA-125/4PWATSGB-125/4PWATSNB-80A/4PWATSGA-160/4PWATSGB-160/4PWATSNB-100A/4PWATSGA-200/4PWATSGB-200/4PWATSNB-160A/4PWATSGA-250/4PWATSGB-250/4PWATSNB-250A/4PWATSGA-320/4PWATSGB-320/4PWATSNB-400A/4PWATSGA-400/4PWATSGB-400/4PWATSNB-630A/4PWATSGA-500/4PWATSGB-500/4PWATSNB-800A/4PWATSGA-630/4PWATSGB-630/4PWATSNB-1000A/4PWATSGA-800/4PWATSGB-800/4PWATSNB-1250A/4PWATSNB-1600A/4P常熟开关CAP1系列双电源自动转换开关型号：CAP1-32/PCAP1-32/PCAP1-63/PCAP1-63/PCAP1-100/PCAP1-100/PCAP1-125/PCAP1-125/PCAP1-140/PCAP1-140/PCAP1-160/PCAP1-160/PCAP1-200/PCAP1-200/PCAP1-225/PCAP1-225/PCAP1-250/PCAP1-250/PCAP1-315/PCAP1-315/PCAP1-350/PCAP1-350/PCAP1-400/PCAP1-400/P)